Suppositional and Unsubstantiated

Suppositional

Suppositional adjective - Existing only as an assumption or speculation.

Unsubstantiated and suppositional are semantically related. In some cases you can use "Unsubstantiated" instead an adjective "Suppositional".

Unsubstantiated

Unsubstantiated adjective - Having no basis in reason or fact.

Suppositional and unsubstantiated are semantically related. Sometimes you can use "Suppositional" instead an adjective "Unsubstantiated".

Nearby Word: unsubstantially
Cite this Source
Unsubstantiated and Suppositional. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/suppositional/unsubstantiated
Suppositional & Unsubstantiated. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/suppositional/unsubstantiated>.
Unsubstantiated or Suppositional. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/suppositional/unsubstantiated.
Google Ngram Viewer shows how "suppositional" and "unsubstantiated" have occurred on timeline